Motion detectors seem to work like magic, "seeing" people in your house without the use of hidden cameras. Three types of motion detectors are used in home security: infrared, ultrasonic and microwave.
Infrared motion detectors, which are the most common, sense body heat.Motion detectors using ultrasonic waves send out pulses that measure moving objects.With microwave motion detectors, the microwaves bounce off moving objects.Ask your home security dealer about dual technology motion detectors, the gold standard of these protection devices. They use a combination of technologies to provide effective detection and fewer false alarms.
Now one of the top on-line publishers in the world, LifeTips offers tips to millions of monthly visitors. Our mission mission is to make your life smarter, better, faster and wiser. Expert writers earn dough for what they know. And exclusive sponsors in each niche topic help us make-it-all happen.
Guru Spotlight |
Phyllis Serbes |